Pencil for oxyhydrogen-lights.



Na. eamaaq Patented Aug. 27, l90l. r. SCHWANHAUSSEB & A. EIMER.

PENCIL FOR OXYHYDBUGEN LIGHTS. (Application file}! M51 1, 1901.)

(Na Modai.)

WITNESSES INVENTO/ T -S fieden'cfi Wanner;

.Auymfiimer;

A TTOHNEYS "m: NORRIS PETERS co, wm'auma, wnsmwa'ron. a. c.

UNITE STATES I PATENT OFF CE.

FREDERICK SCIIWVANHAUSSER, OF JERSEY CITY, NEWV JERSEY, AND AUGUST EIMER, OF NEW YORK, N. Y.

PENCIL FOR OXYHYDROGEN-LIGHTS.

$ E 10ATION forming part of Letters Patent No. 681,488, dated August 27, 1901.

Application filed May 1, 1901.

To a whom/it may concern.-

Be it known that we, FREDERICK SCHWAN- HAUSSER, of Jersey City, in the county of Hudson and State of New Jersey, and AUGUST EIMER, of New York, borough of Manhattan, in the State of New York, have invented certain new and useful Improvements in Pencils for OXyhydrogen-Lights, of which the following is a specification.

This invention relates to improvements in pencils for oyXhydrogen-lights; and the object of the invention is to furnish a pencilof this kind which can be used to a greater economy than those of the common type; and the invention consists of a pencilfor oxyhydrogenlights comprising a lower supporting-section and a detachable upper section supported thereon, each of said sections containing an oxid of a rare earth metal.

The invention consists, further, in a pencil of the kind stated and in which the lower section contains a less quantity than the upper section of an oXid of a rare earth metal.

In the accompanying drawings, Figure 1 represents a side elevation of an ordinary construction of oxyhydrogen-lightwith our improved pencil shown in position for use. Figs. 2 and 3 are side elevations, respectively, of the upper andlower sections of our improved pencil; and Fig. 4 is a top view of the lower section of the pencil.

Similar letters of reference indicate corresponding parts.

Ourim proved pencil for oxyhydrogen-lights is supported on a spring-holder a, which is capable of rotary motion by a hand-operated spindle a and bevel-wheels a a The oxygen and hydrogen is supplied by two parallel pipes b (in the drawings one being directly behind the other) to a mixing-chamber b, from which the curved nozzle 12 is extended upward toward the light-giving pencil, the flame of the gases being projected on the upper section 0 of the pencil. The parallel supply'pipes'for the oxygen and hydrogen gases are supported on a suitable upright stand 0, which also serves for supporting the spindle ct and the spindle d, the latter threaded at its outer end and by which the bridge d,supporting the pencil and its rotating mechanism, can be moved on the parallel supply- Serial No. 58,295. (No model.)

pipes 6 forward or backward for adjusting the pencil closer to or farther away from the oXyhydrogen-jet.

The pencil is not made in one piece, as heretofore, but in two pieces, the lower section 0 and an upper section or cap 0', and the oxy hydrogen-flame is projected on the upper section or cap exclusively. The pencil when in use is rotated so as to bring the entire circumference of the cap into contact with the flame. The lower section a of the pencil is provided with a pin 6, which is preferably made integral therewith and which serves for retaining the upper section, the latter being provided with a corresponding socket e, as indicated in dotted lines in Figs. land 3. By this construction of the pencil the upper section, which serves for the production of most of the light, can be readily removed when consumed and replaced bya new cap. Both the lower section and the upper section or cap are made of the oxids or salts of the rare earth metals, which are mixed in such proportions as to produce a composition having great heat resistance. The mixture of the oxids or salts can be varied according to the color of the light to be produced; but by preference the oxids of thorium, zirconium, or cerium are used, either singly or in combination; but also other oxids or salts of the well-known group of rare earth metals as well as other light=giving substances may be used. The lower section may be made of a composition containing a lesser amount of the oxids or salts of the rare earth metals than the upper section or cap, as the same is subjected in a lesser degree to the heat of the oxyhydrogenflame than the upper section, the latter receiving the full impact of the flame and the lower section forming the support of the upper or light-giving section.

Having thus described our invention, we claim as new and desire to secure by Letters Patent 1. A pencil for oxyhydrogen-lights, comprising a lower supporting-section, and a detachable upper section supported thereon, each of said sections contai'n'ihgfi oxid of a rare earth metal, substantially as set-iorth.

2. A pencil for oXyhydrogen-lights, comprising a lower supporting-section having at its upper end a projecting pin, and a detachable upper section supported thereon and having a recess for engaging said pin, said npperseotion containing an oxid of rare earth metal, and said lower section containing a less quantity of an oxid of a rare earth metal 211311 the upper section, substantially as set orth.

In testimony that we claim the foregoing as our invention We have signed our names 10 in presence of two subscribing Witnesses.

FREDERICK SOHWANHAUSSER. AUGUST EIMER. Witnesses:

W. HARRES, JACOB B. TooH. 

